using data predictively to help power entire cities. so the turbines of today... will power us all... into the future. ♪ >> take a look at this before and after picture. this is the before. it is a politician named victor. a picture of him while he was running for president. this is what he looked like a few months later. oh. during that presidential campaign, victor was poisoned. >> the effects were startling. the healthy vibrant opposition candidate for ukraine's presidency transformed in a matter of a few weeks this fall in to a grifly ill man. his face almost overnight changed in to a scarred, bloated mask. >> ultimately he was found to have ingested toxic levels of dioxin, possibly fed to him secretly in a bowl of soup. he survived the poisoning but later lost the election. or at least it seemed like he did before his supporters took to to the streets. day after day they marched on this square saying the election was rigged and they wore orange scarves and flags because org was his campaign color. in the end they wochbl it forced a new presidential election